adjective Medicine/Medical.

  1. not invading adjacent healthy cells, blood vessels, or tissues; localized: a noninvasive tumor.
  2. not entering or penetrating the body or disturbing body tissue, especially in a diagnostic procedure.


  1. (of medical treatment) not involving the making of a relatively large incision in the body or the insertion of instruments, etc, into the patient


  1. Not penetrating the body, as by incision. Used especially of a diagnostic procedure.
  2. Not invading healthy tissue.

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